1. Senior Lecturer, Dept. of Bio-Science, Faculty of Applied Science, Univ. of Vavuniya, Vavuniya 43000, Sri Lanka.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Pusan National Univ., Busan 46241, Republic of Korea.
3. Associate Professor, Faculty of Engineering, Univ. of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia.
4. Senior Lecturer, Faculty of Engineering, Univ. of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia.
5. Professor, Faculty of Sciences & Technology (RealTek), Norwegian Univ. of Life Sciences, P.O. Box 5003, Ås 1432, Norway.
6. Emeritus Professor, Faculty of Engineering, Univ. of Technology Sydney, P.O. Box 123, Broadway, NSW 2007, Australia; Research Professor, Faculty of Sciences & Technology, Norwegian Univ. of Life Sciences, P.O. Box 5003, Ås 1432, Norway (corresponding author).